package com.self.baseutile.components;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Build;
import android.text.Layout;
import android.text.StaticLayout;
import android.text.TextPaint;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.widget.TextView;

import org.json.JSONArray;
import org.json.JSONException;

import java.lang.reflect.Field;

/**
 * Craeted by: huangdx
 * Date : 2021/3/2
 * Describe :
 */
public class JustifyTextView  extends TextView {

    private final String namespace = "http://schemas.android.com/apk/res/android";
    private String text;
    private float textSize;
    private float paddingLeft;
    private float paddingRight;
    private float marginLeft;
    private float marginRight;
    private int textColor;
    private JSONArray colorIndex;
    private Paint paint1 = new Paint();
    private Paint paintColor = new Paint();
    private float textShowWidth;
    private float Spacing = 0;
    private int mLineCount=-1;
    private float LineSpacing = 1.3f;//行与行的间距
    public JustifyTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        text = attrs.getAttributeValue(
                namespace, "text");
        textSize = attrs.getAttributeIntValue(namespace, "textSize", dip2px(context, 36));//字体大小
        textColor = attrs.getAttributeIntValue(namespace, "textColor", Color.rgb(255, 255, 255));//字体颜色255 69 0
        paddingLeft = attrs.getAttributeIntValue(namespace, "paddingLeft", 0);
        paddingRight = attrs.getAttributeIntValue(namespace, "paddingRight", 0);
        marginLeft = attrs.getAttributeIntValue(namespace, "marginLeft", 0);
        marginRight = attrs.getAttributeIntValue(namespace, "marginRight", 0);
        paint1.setTextSize(textSize);
        paint1.setColor(textColor);
        paint1.setAntiAlias(true);
        paintColor.setAntiAlias(true);
        paintColor.setTextSize(textSize);
        paintColor.setColor(Color.BLUE);
    }
    public static int dip2px(Context context, float dpValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }
    public JustifyTextView(Context context, float textSize, int textColor, float paddingLeft, float paddingRight, float marginLeft, float marginRight) {
        super(context);
        this.textSize = textSize;
        this.textColor = textColor;
        this.paddingLeft = paddingLeft;
        this.paddingRight = paddingRight;
        this.marginLeft = marginLeft;
        this.marginRight = marginRight;
        paint1.setTextSize(textSize);
        paint1.setColor(textColor);
        paint1.setAntiAlias(true);
        paintColor.setAntiAlias(true);
        paintColor.setTextSize(textSize);
        paintColor.setColor(Color.BLUE);
    }
    public JSONArray getColorIndex() {
        return colorIndex;
    }
    public void setColorIndex(JSONArray colorIndex) {
        this.colorIndex = colorIndex;
    }
    /**
     * 传入一个索引，判断当前字是否被高亮
     *
     * @param index
     * @return
     * @throws JSONException
     */
    public boolean isColor(int index) throws JSONException {
        if (colorIndex == null) {
            return false;
        }
        for (int i = 0; i < colorIndex.length(); i++) {
            JSONArray array = colorIndex.getJSONArray(i);
            int start = array.getInt(0);
            int end = array.getInt(1) - 1;
            if (index >= start && index <= end) {
                return true;
            }
        }
        return false;
    }
    @Override
    protected void onDraw(Canvas canvas) {
// textShowWidth = getMeasuredWidth() - paddingLeft - paddingRight - marginLeft - marginRight;
        int lineCount = 0;
        text = this.getText()+"";
        if (TextUtils.isEmpty(text)) return;
        char[] textCharArray = text.toCharArray();
// 已绘的宽度
        float drawedWidth = 0;
        float charWidth;
        int length=textCharArray.length;
        for (int i = 0; i < length; i++) {
            charWidth = paint1.measureText(textCharArray, i, 1);
            if (textCharArray[i] == 'n') {
                lineCount++;
                drawedWidth = 0;
                continue;
            }
            if (textShowWidth - drawedWidth < charWidth) {
                lineCount++;
                drawedWidth = 0;
            }
/*boolean color = false;
            try {
                color = isColor(i);
            } catch (JSONException e1) {
                e1.printStackTrace();
            }
            if (color) {
                canvas.drawText(textCharArray, i, 1, paddingLeft + drawedWidth,
                        (lineCount + 1) * textSize * LineSpacing, paintColor);
            } else {
                canvas.drawText(textCharArray, i, 1, paddingLeft + drawedWidth,
                        (lineCount + 1) * textSize * LineSpacing, paint1);
            }*/
            canvas.drawText(textCharArray, i, 1, paddingLeft + drawedWidth,
                    (lineCount + 1) * textSize * LineSpacing, paint1);
            if (textCharArray[i] > 127 && textCharArray[i] != '、' && textCharArray[i] != '，' && textCharArray[i] != '。' && textCharArray[i] != '：' && textCharArray[i] != '！') {
                drawedWidth += charWidth + Spacing;
            } else {
                drawedWidth += charWidth;
            }
        }
    }
    public float getSpacing() {
        return Spacing;
    }
    public void setSpacing(float spacing) {
        Spacing = spacing;
    }
    public float getMYLineSpacing() {
        return LineSpacing;
    }
    public void setMYLineSpacing(float lineSpacing) {
        LineSpacing = lineSpacing;
    }
    public float getMYTextSize() {
        return textSize;
    }
    public void setMYTextSize(float textSize) {
        this.textSize = textSize;
        paint1.setTextSize(textSize);
        paintColor.setTextSize(textSize);
    }
    public void onMeasure(int w,int h){
        super.onMeasure(w, h);
        setMeasuredDimension(getMeasuredWidth(), (int) ((measureLineCount() + 1) * (int) textSize * LineSpacing + 12));
    }
    private int measureLineCount(){
        if(mLineCount!=-1){
            return  mLineCount;
        }
        if(Build.VERSION.SDK_INT>=16){
            try {
                LineSpacing=getLineSpacingMultiplier();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }else{
            try {
                Field field =   this.getClass().getDeclaredField("LineSpacing");
                field.setAccessible(true);
                LineSpacing=field.getFloat(this);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        textShowWidth = getMeasuredWidth() - paddingLeft - paddingRight - marginLeft - marginRight;
        int lineCount = 0;
        text = this.getText()+"";
        if (TextUtils.isEmpty(text)) return 0;
        char[] textCharArray = text.toCharArray();
// 已绘的宽度
        float drawedWidth = 0;
        float charWidth;
        int length=textCharArray.length;
        for (int i = 0; i < length; i++) {
            charWidth = paint1.measureText(textCharArray, i, 1);
            if (textCharArray[i] == 'n') {
                lineCount++;
                drawedWidth = 0;
                continue;
            }
            if (textShowWidth - drawedWidth < charWidth) {
                lineCount++;
                drawedWidth = 0;
            }
            if (textCharArray[i] > 127 && textCharArray[i] != '、' && textCharArray[i] != '，' && textCharArray[i] != '。' && textCharArray[i] != '：' && textCharArray[i] != '！') {
                drawedWidth += charWidth + Spacing;
            } else {
                drawedWidth += charWidth;
            }
        }
        mLineCount=lineCount;
        return lineCount;
    }
}
